The Collaborative International Dictionary
Diageotropism \Di`a*ge*ot"ro*pism\, n. (Bot.) The tendency of organs (as roots) of plants to assume a position oblique or transverse to a direction towards the center of the earth.
Wiktionary
n. (context botany English) The tendency of plant organs, such as roots, to assume a position oblique or transverse to a direction towards the centre of the Earth.
Usage examples of "diageotropism".
Means of observation Apogeotropism--Cytisus--Verbena--Beta--Gradual conversion of the movement of circumnutation into apogeotropism in Rubus, Lilium, Phalaris, Avena, and Brassica--Apogeotropism retarded by heliotropism--Effected by the aid of joints or pulvini--Movements of flowerpeduncles of Oxalis--General remarks on apogeotropism--Geotropism--Movements of radicles--Burying of seedcapsules--Use of process--Trifolium subterraneum--Arachis--Amphicarpaea--diageotropism--Conclusion OUR object in the present chapter is to show that geotropism, apogeotropism, and diageotropism are modified forms of circumnutation.
The benefits derived from geotropism, apogeotropism, and diageotropism, are generally so manifest that they need not be specified.